1-methyl pyrazole
Methylpyrazole
CAS: 930-36-9
Molecular Formula: C4H6N2
1-methyl pyrazole - Names and Identifiers
| Name | Methylpyrazole |
| Synonyms | AKOS PAO-1140 Methylpyrazole methylpyrazole N-METHYLPYRAZOLE 1-Methylpyrazole 1-METHYLPYRAZOLE 1-methyl pyrazole Pyrazole, 1-methyl- 1-METHYL-1H-PYRAZOLE 1H-Pyrazole, 1-methyl- TRIS-1-PYRAZOLYLMETHANE |
| CAS | 930-36-9 |
| EINECS | 618-896-2 |
| InChI | InChI=1/C4H6N2/c1-6-4-2-3-5-6/h2-4H,1H3 |
1-methyl pyrazole - Physico-chemical Properties
| Molecular Formula | C4H6N2 |
| Molar Mass | 82.1 |
| Density | 0.988 g/mL at 20 °C (lit.) |
| Melting Point | 36.5°C (estimate) |
| Boling Point | 127 °C |
| Flash Point | 35 °C |
| Water Solubility | Soluble in water |
| Vapor Presure | 13.8mmHg at 25°C |
| Appearance | Liquid |
| Color | Clear colorless to light yellow |
| BRN | 105207 |
| pKa | 2.25±0.10(Predicted) |
| Storage Condition | Inert atmosphere,Room Temperature |
| Refractive Index | n20/D 1.477 |
1-methyl pyrazole - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | R10 - Flammable R36/37/38 - Irritating to eyes, respiratory system and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S37/39 - Wear suitable gloves and eye/face protection S16 - Keep away from sources of ignition. |
| UN IDs | UN 1993 3/PG 3 |
| WGK Germany | 3 |
| FLUKA BRAND F CODES | 10 |
| HS Code | 29331990 |
| Hazard Class | 3 |
| Packing Group | III |
1-methyl pyrazole - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| Introduction | 1-methylpyrazole has a boiling point of 127 degrees (one atmosphere) and a density of 1.0, at room temperature and atmospheric pressure appearance is colorless or light yellow liquid, can be used as organic synthesis intermediates. |
| Use | 1-methylpyrazole is a common organic base and is frequently used as an acid binding agent in acylation reactions. 1-methyl pyrazole in three carbon atoms can be carried out under different conditions of nitration reaction, halogenation reaction. Carbon 3 can be nitrated to introduce a nitro group; And the hydrogen on carbon 5 is more acidic and easier to be removed by alkali, it is thus possible to introduce a boron unit on carbon number 5 in combination with n-butyl lithium and trimethyl borate. |
| storage | 1-methylpyrazole may be sealed for storage in a cool and dry storage vessel. The current data show that the chemical properties of the compound are stable, not easy to deteriorate, but need to avoid contact with the oxide, there is no report on its special reactivity, no decomposition under conventional circumstances, no dangerous reaction. This compound belongs to an organic alkali compound, and should be stored as far as possible to avoid acidic substances. |
Last Update：2024-04-09 21:54:55
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